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To review for tomorrow’s quiz, play this review game. Use your checklist as you play!

To review for tomorrow’s quiz, play this review game. Use your checklist as you play! . Ch.2-1 Gravity and Motion. To play: Read the question slide. Wait until everyone in your group has an answer written down. Click the powerpoint to the next slide and reveal the answer.

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To review for tomorrow’s quiz, play this review game. Use your checklist as you play!

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  1. To review for tomorrow’s quiz, play this review game. Use your checklist as you play! Ch.2-1 Gravity and Motion

  2. To play: • Read the question slide. • Wait until everyone in your group has an answer written down. • Click the powerpoint to the next slide and reveal the answer. • If you got the answer correct, great going! Check that off of your list. • If you got the answer incorrect, be sure to write the correct answer on your worksheet quickly! Instructions

  3. Define terminal velocity Question 1: Terminal Velocity

  4. Terminal velocity is the constant velocity of an object when only the force of gravity is acting on the object. Answer 1: Terminal Velocity

  5. If you drop an apple and a feather off of a cliff, and there is no air resistance, which will hit the ground first? Question 2: Gravity

  6. They will both land at the same time. Answer 2: Gravity

  7. Define Free Fall. Question 3: Free Fall

  8. The motion of an object when only the force of gravity is acting on it. Answer 3: Free Fall

  9. Are monkey’s weightless in space? Question 4: Weightless

  10. No, nothing can be weightless. Anything that has mass has weight. Answer 4: Weightless

  11. Define centripetal force. Question 5: Centripetal Force

  12. The unbalanced force that causes objects to move in a circular path. Answer 5: Centripetal Force

  13. What is the average acceleration of a falling object? Question 6: Acceleration

  14. 9.8 m/s/s Answer 6: Acceleration

  15. What three characteristics affect the amount of air resistance acting on an object? Question 7: Air Resistance

  16. Size of the object • Shape of the object • Speed of the object Answer 7: Air Resistance

  17. Define orbit. Question 8: Orbit

  18. The path of one object around another in space. Answer 8: Orbit

  19. A volleyball rolls off of a table and hits the ground after 3.5 seconds. What is the volleyball’s velocity when it hits the ground? Question 9: Change in Velocity

  20. Δv= g(t) Δv = x g = 9.8 m/s/s t= 3.5 s X= 9.8(3.5) X= 34.3 m/s Down Answer 9: Change in Velocity

  21. Define air resistance. Question 10: Air Resistance

  22. The force that opposes the motion of objects through the air. Answer 10: Air Resistance

  23. A bouncy ball falls out of a toy box and hits the floor after 0.75 seconds. What was the velocity of the ball as it hit the ground? Question 11: Change in Velocity

  24. Δv= g(t) Δv = x g = 9.8 m/s/s t= 0.75 s X= 9.8(0.75) X= 7.35 m/s Down Answer 11: Change in Velocity

  25. What does the “g” stand for in the formula Δv=g(t)? Question 12: Acceleration

  26. Acceleration Due to Gravity • 9.8 m/s/s Answer 12: Acceleration

  27. Which object accelerates more quickly when dropped? • Acorn • Marble • Laptop Question 13: Falling Objects

  28. They all accelerate at the same rate, 9.8m/s/s. Answer 13: Falling Objects

  29. A leaf falls off of a tree. The leaf hits the ground at a velocity of 17.6 m/s. How long did it take the leaf to fall? Question 14: Change in Velocity

  30. T= Δv • g Δv = 17.6 m/m g = 9.8 m/s/s t= x X= 17.6 9.8 X= 1.8 s Answer 14: Change in Velocity

  31. What two forces act on all falling objects? Question 15: Gravity and Motion

  32. Air resistance • Gravity Answer 15: Gravity and Motion

  33. What characteristics cause a parachute to fall slowly. Question 16: Gravity and Motion

  34. A uniform shape (all sides are equal) • Even strings along all sides of the parachute • Minimal holes on the sides • A more rounded shape that catches the air inside it (not a completely flat parachute) Answer 16: Gravity and Motion

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